The northern lights dance over the Mendenhall Glacier, Alaska’s backyard glacier in Juneau, Alaska. Northern lights occur when bursts of electrically charged particles streaming off the sun, called solar winds, strike the earth’s upper atmosphere creating curtains of light. The Mendenhall Glacier is approximately 12-miles long and one of over 50 glaciers flowing from the Juneau Icefield. The Mendenhall has been retreating for over 250 years.
